First time garden in new build

I have never had a garden and so I’m at a complete loss as to what to with this space located in Scotland.

I think I will start with some containers plants as we still need to landscape. We are thinking of putting in a decking where the door is and a square of grass somewhere but other than I’m feeling quite intimidated by the space. I’d love a wee veg patch but worried I will fail to grow anything.

Looking for any suggestions or advice on what to do with this west-facing space. I hate the ‘love island’ style gardens, I’d rather eat grass than put down astro turf. I really love a cottage style garden so please let me know how I can achieve this dream as a complete beginner.